Here one sees upon receiving the change with a careful and secure packaging, not too small nor too large.
Not tested in the long term but the quality of the batteries connections locations, plastics, shape that fits perfectly, everything is much better than what I've seen yet for competitors, the batteries are advertised 750mAh therefore see over time but it is better than a bad good 750mAh 2800mAh of experience.
The loading system is intelligently thought (the transformer plugs into the Wii stand, wii directly to the stand remains energized and the loading system is on an On / Off button that prevents the user for nothing) short much more convenient than USB.
So I highly recommend this as the only system found that drinking days for batteries to Wii controllers and moreover fact base to stabilize the Wii and showcase.